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What Is An Overbite? What Does Correction and Surgery Involve?

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An overbite is the overlap or gap between the top and bottom front teeth. It's fairly common for the upper teeth to sit too far over or in front of the lower teeth, causing overbite teeth problems. Fortunately, dentists are experts in fixing this issue and now overbite correction is the second most common reason people choose toi get braces.

overbite teeth with braces
If you have malocclusion, you may need braces or surgery to correct it

Here, we’ll answer questions such as:

  • What is an overbite?
  • What's the difference between a normal, deep and severe overbite?
  • Why should you fix overbite?
  • What does treatment involve?

Keep reading to learn more about this common dental malocclusion issue and what to do if you're worried about it.

What is an overbite?

An overbite is the vertical overlap or horizontal gap between your top and bottom front teeth.

A horizontal overbite, also called an ‘overjet', causes the upper teeth to protrude at the front of the mouth. When very pronounced, you might hear this called ‘buck teeth', but we will refrain from using that term here. An overjet may occur along with an open bite, meaning there is a vertical gap between the upper and lower teeth.

When the vertical overlap is 2-4mm, or around 30% of the lower teeth are covered, this is considered a normal overbite. A deep overbite, also known as a deep bite, occurs when the overlap is 4-6mm or more. In the case of a very severe overbite, the upper teeth may completely cover the lower teeth and even dig into the lower gum.

An overbite can be both horizontal and vertical, meaning the upper teeth protrude at the front and hang too far down over the lower teeth.

The video below gives a brief visual explanation of these different dental problems including overjet vs overbite:

What causes an overbite

There are a few different things that might cause this dental problem. Some of the common reasons include:

  • Genetics
  • A jaw that doesn’t form properly as a fetus
  • Thumb sucking as a child
  • Overusing a bottle or pacifier as a baby
  • Tongue thrusting
  • Nail biting
  • Excessive chewing on things like pencils and pens

Different types of overbite

There are two types of overbite: skeletal and dental. The skeletal kind is caused by irregularities in jawbone development. A dental overbite occurs when there are problems with baby or adult teeth coming through, like overcrowding, or when teeth are put under pressure, for example from thumb sucking.

Overbite vs underbite

overbite vs underbite
This diagram shows an over and underbite

An overbite occurs when your upper jaw sits over your lower teeth, whereas an underbite occurs when your lower teeth sit in front of your upper teeth. Underbite is also known as prognathism, and has different issues and treatments associated with it. You can read more about underbite teeth here.

Is an overbite bad?

Once you understand the condition, the next step is to discover whether you need treatment. Your orthodontist will help you choose the right method of treatment for you, based on your needs. The information in the table below will help you identify whether the condition is a severe overbite vs normal, and what treatment – if any – might be needed.

Type of overbite Size Cause Requires braces? Requires surgery?
Normal 2-4mm Usually dental Unlikely Highly unlikely
Deep 4-8mm Dental or skeletal Very likely Unlikely
Severe 9mm or more Dental or skeletal Yes Likely

There are a range of reasons why it’s a good idea to fix an overbite. Untreated, overbite problems can include:

  • Poor dental hygiene
  • Teeth wearing down quickly
  • Facial pain
  • Speech problems
  • Poor face structure
  • Temporomandibular joint (TMJ) disorders

Perhaps you are considering the options for getting rid of an overbite in your child, and are wondering whether it's worth putting them through the treatment. Bear in mind in most cases, the younger the correction takes place, the better. It can be harder to correct an overbite in adults because the jawbone and tooth roots are more firmly developed.

The process of getting braces, surgery, and then long-term retainers for an overbite might be a bit scary but the benefits of fixing misaligned teeth will outweigh the short-term discomfort during treatment.

Ask a dentist: What problems can an untreated overbite cause?

When an overbite is left untreated, the upper teeth may continue to move out of position. This can put pressure on the surrounding gums and may lead to gum recession. This recession may then lead to tooth sensitivity due to the exposed roots. Additionally, teeth may be more susceptible to chipping on their edges since the upper and bottom teeth aren't supporting each other.

Dr. Joseph Salim, Sutton Place Dental Associates

How to fix an overbite

The first thing to understand is that a normal overbite is around 2-4mm, so you don’t always have to worry about your upper teeth overhanging slightly.

There are different ways your dentist might suggest correcting your bite. It will depend on how severe the problem is, and what has caused it.

Overbite braces

overbite braces
Braces are an effective way to re-align teeth for an overbite-free smile

Most overbite correction in the US is done using braces. Treatment with braces is effective and, when followed up with a retainer, the results should be lifelong. This treatment can take between one and two years; sometimes more. 

If getting private orthodontic treatment, you may have the option of clear teeth braces, which are less noticeable than traditional metal ones.

Before getting braces for an overbite, ask your dentist or orthodontist to show you pictures of overbites before and after braces. Knowing what a difference this treatment can make to your smile may help motivate you through the short-term discomfort! You can read more about all of the types of braces in our article here.

Invisalign for overbite

invisalign overbite
Invisible aligner braces are much less noticeable

Invisalign clear aligner braces are a really effective form of overbite correction for mild and moderate cases. Although almost invisible, these braces apply pressure to move teeth to a much better position, transforming a deep overbite to a normal one. Patients usually switch to a new set of aligners every two weeks.

Treatment with Invisalign may be quicker than with regular metal braces, but the main advantage of this system is that it's almost unnoticeable. Although Invisalign for overbite is not available on Medicaid, it may be partially covered on some insurance plans and many parents are happy to pay the extra for their children to avoid ‘metal mouth' taunts at school. Invisalign is also popular with adults who want to maintain a more professional appearance or have the flexibility to remove their braces.

Discover more about Invisalign and other invisible braces in our full guide.

Another type of invisible brace that may be able to correct your overbite is at-home clear aligners. This is a more affordable option that requires no in-office visits with your dentist, however, it is only suitable for mild cases.

Candid teeth aligners are one brand of at-home aligners that has a cool online tool called a Smile Assessment, which lets you find out right away if you're eligible for this type of treatment. Just click the link below to get started!

Overbite surgery

A jaw set too far forward can be caused by skeletal issues in which case it usually requires correction with jaw surgery, also called orthognathic surgery. When the lower jaw, or mandible, has not developed properly, surgery can help improve the shape. You can expect your facial appearance to change slightly as a result of the surgery.

In the US, overbite surgery on CHIP or Medicaid is free of charge for children, when deemed medically necessary. Adults with a severely misaligned bite may be eligible for Medicaid treatment prices.

Overbite treatment with surgery normally involves one or more of the following:

  • Removing of some teeth
  • Repositioning the jaw
  • Inserting screws
  • Adding plates around the jaw

All of the work to fix an overbite in the jaw is done inside the mouth, so it won't leave any visible scars. Patients will probably have to stay in hospital overnight after overbite surgery, and take off work or school for 2-4 weeks. Additional orthodontic work usually takes place before and after the surgery to guide the alignment of the teeth.

retainer treatment
A retainer helps keep teeth in position

Summary: Before and after treatment

Before you fix your overbite teeth, you may be very conscious about how you look; especially if you have a severe overbite. You may also experience facial pain and headaches as a result of a deep overbite pushing back your lower jaw and putting pressure on your nerves and blood supply. You might wear your teeth down quicker because there is more strain on them.

Once you have achieved a normal overbite following correction, you might notice a change in the shape of your face because your lower jaw is further forward. This won’t be extreme; you might need to look at your before and after pictures to see the difference! Any pain you may have felt should hopefully go away after your braces or surgery.

If you have had overbite braces treatment, you will need to wear a retainer afterwards to stop your teeth from moving out of position again.


What does an overbite look like?

There are different types of overbites with different symptoms, but you may be able to tell if you have an overbite if you notice your upper teeth protruding forward more than your lower teeth. Most people have a slight overbite that is not noticeable and doesn't need treatment.

How to get rid of an overbite?

Overbite correction is generally pretty straightforward. Dentists and orthodontists know how to correct an overbite after years of experience with this treatment in dentistry. You can:

  • Get overbite braces
  • Have jaw surgery
  • Use clear aligners such as Invisalign

Can braces fix an overbite?

The short answer is, yes! Braces can and do fix overbites, and overbite correction with braces is the most common treatment in the US.

Does Invisalign fix deep bites and overjets?

The easy answer is yes! Overbite teeth can be fixed with Invisalign in most moderate cases. The price for Invisalign overbite correction is a little higher than metal braces, but treatment may be quicker and is a lot less obvious to other people.

Another invisible option for fixing deep bites and overjets is with Candid clear aligners. Not only is treatment with Candid invisible, but it's also much more affordable than with Invisalign and other traditional braces options.

That's because Candid offers remote care, cutting out the costs and inconvenience of having to go to the dentist all the time. But that doesn't mean a lower quality of treatment. In fact, we recommend Candid because, with them, only orthodontists are allowed to monitor your treatment, ensuring the best care possible. You can get started with Candid by finding out if you're eligible for this kind of treatment. To do so, take their free Smile Assessment now.

If it turns out you're eligible, you can purchase your impression kit at home, to take molds of your teeth on your own, or, if you'd prefer to speak to somebody in-person about treatment with Candid, you can visit a Candid Studio.

Can you fix an overbite naturally?

fix an overbite
Braces and jaw surgery for overbite are the most common treatments

Unfortunately, you cannot correct this problem naturally; you'll need overbite surgery or braces to fix your overbite. It is possible to prevent some overbite cases, such as those caused by thumb sucking, pencil chewing, or overuse of pacifiers in babies. But, if you have a severe overbite and want to know how to fix it, you will need to consult a dentist.

Can you fix an overbite at home?

While there is no safe way to develop your own DIY treatment plan at home, without any professional input, you can, however, opt for at-home clear aligners like with Candid. Treatment with Candid is closely monitored by an orthodontist, and be completed 100% at home, without ever stepping into the dentist's office. You can take Candid's Smile Assessment right now to see if you're eligible. If you are, then you order your impression kit online to get started.

Can you fix an overbite without braces?

Braces are the most common form of treatment for overbite correction. If you are concerned about esthetics, invisible braces may be the best option for you. Some very severe overbites can be fixed with jaw surgery.

Can I get correction in the US with my insurance?

Children under 18 may be eligible to have overbite teeth fixed on CHIP or Medicaid with braces or surgery. As with any other treatment, approval will depend on the severity of the condition and the state you live in. 

Adults are only likely to get braces or overbite surgery on the Medicaid if they have a severe overbite which causes problems with everyday things like eating and speaking. You can read more about Medicaid dental insurance here

What is a normal overbite?

It's considered normal when the upper front teeth sit around 2-4mm in front of or overhanging the lower teeth. Research suggests that the average overbite teeth have is 2.9mm, and around 8% of children have a deep or severe overbite of more than 6mm. In the US, correction treatment is normally recommended in cases of more than 4mm.

How long does it take to fix an overbite?

Treatment with braces normally takes from 1 to 2 years to fix, but you may be advised to wear a retainer for the rest of your life. 

What Is An Overbite? What Does Correction and Surgery Involve?
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Amanda Napitu
Amanda Napitu
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Amanda specialises in writing informative content about dentistry. She has been a regular contributor to Dentaly.org since 2017, and collaborates with dozens of dentists to keep this content accurate and up-to-date.
Dr. Joseph Salim
Amanda Napitu on Website
Joseph Salim DMD is a NYC cosmetic and sleep apnea dentist, as well as a botox specialist. In 1996 he founded Sutton Place Dental Associates, a multi-specialty dental practice. Dr. Salim completed his General Practice Residency at the Lutheran Medical Center in New York in 1993. He has received numerous awards, and in 1989 was the recipient of a grant for outstanding academic achievement.
NCBI: Prevalence and distribution of selected occlusal characteristics in the US population, 1988-1991. Consulted 16th May 2019. American Association of Orthodontics: Understanding your treatment options Consulted 26 June 2019.